// Copyright (C) 2014 Guibing Guo
//
// This file is part of LibRec.
//
// LibRec is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// LibRec is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with LibRec. If not, see <http://www.gnu.org/licenses/>.
//

package librec.baseline;

import librec.data.SparseMatrix;
import librec.intf.Recommender;

/**
 * Baseline: predict by average rating of all users
 * 
 * @author guoguibing
 * 
 */
public class GlobalAverage extends Recommender {

	public GlobalAverage(SparseMatrix rm, SparseMatrix tm, int fold) {
		super(rm, tm, fold);

		this.algoName = "GlobalAvg";
	}

	@Override
	public double predict(int u, int j) {
		return globalMean;
	}

}
